Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun step-in

1 sense of step-in

Sense 1
pantie, panty, scanty, step-in -- (short underpants for women or children (usually used in the plural))
       => underpants -- (an undergarment that covers the body from the waist no further than to the thighs; usually worn next to the skin)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb step-in

2 senses of step in

Sense 1
intervene, step in, interfere, interpose -- (get involved, so as to alter or hinder an action, or through force or threat of force; "Why did the U.S. not intervene earlier in WW II?")
       => interact -- (act together or towards others or with others; "He should interact more with his colleagues")

Sense 2
substitute, deputize, deputise, step in -- (act as a substitute; "She stood in for the soprano who suffered from a cold")
       => supplant, replace, supersede, supervene upon, supercede -- (take the place or move into the position of; "Smith replaced Miller as CEO after Miller left"; "the computer has supplanted the slide rule"; "Mary replaced Susan as the team's captain and the highest-ranked player in the school")